<template>
    <footer class="footer">
      <span class="todo-count" v-show="residue"><strong>{{residue}}</strong>剩余</span>
      <ul class="filters">
        <li>
          <a :class="{selected:type==='all'}" href="#/" @click.prevent="changeType('all')">全部</a>
        </li>
        <li>
          <a :class="{selected:type==='active'}" href="#/active" @click.prevent="changeType('active')">进行中</a>
        </li>
        <li>
          <a :class="{selected:type==='completed'}" href="#/completed" @click.prevent="changeType('completed')">已完成</a>
        </li>
      </ul>
      <button class="clear-completed" @click = "clearList" v-show="isDaneAll">清除已完成</button>
    </footer>
</template>

<script>
 export default {
   name: 'TodoFooter',
   props: {
    residue:{
      type:Number,
      require:true,
    },
    isDaneAll:{
      type:Boolean,
      require:true,
    },
    type:{
      type:String,
      require:true,
    }
   },
   methods:{
    clearList(){
      this.$emit('clearList')
    },
    changeType(type){
      this.$emit('changeType',type)
    }
   }
 }
</script>

<style scoped lang='less'>

</style>